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Title: Efficient visible photoluminescence from carbon nanotubes in zeolite templates
Authors: Guo, Jiandong
Yang, Chunlei
Li, Zhaoming
Bai, Ming
Liu, H. J.
Li, G. D.
Wang, E. G.
Chan, Che-Ting
Tang, Zi-Kang
Ge, Wei-Kun
Xiao, Xudong
Keywords: Carbon nanotubes
Light polarisations
Raman spectra
Issue Date: 30-Jun-2004
Citation: Physical review letters, v. 93, p. 017402, 2004
Abstract: We have found strong visible photoluminescence (PL) from 0.4 nm carbon nanotubes embedded in the ordered channels of zeolite crystal matrix. The PL exhibits a broad emission band with an efficiency of ~1-5%. Strong polarization dependence is observed both on the excitation and emission, indicating a preferential optical dipole along the axis of carbon nanotubes. By correlating with the absorption and Raman spectra, we identify (3,3) and (4,2) tubes to be responsible for the PL peaks at ~2.6 eV and ~1.7 eV, respectively.
Rights: Phys. Rev. Letter. © copyright (2004) American Physical Society. The Journal's web site is located at
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